---What are you busy doing these days?---____ the college entrance examination.

题干

---What are you busy doing these days?
---____ the college entrance examination.

A．Preparing for	B．To prepare for
C．To be preparing for	D．Prepared for

上一题下一题 0.64难度单项选择更新时间:2013-08-28 10:29:55

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